Use the correct word from the box to complete the sentences (destroy, destroyed, constructed,pollute, pollution, production,solve)
2) water is one of the most serious ecological problems
3) The fire a lot of trees in the forest
4) the of plastic bottles needs too much energy.
5) people must the problem of radioactive pollution as soon as possible
6) when we wildlife,we kill the animals
7) Don't throw the paper! You our nature